Surge Protector products ICP-DAS products Signal Conditioning Modules Signal Conditioning Module Surge Protector SG-770 SG-770 offers 7 differential for surge protection. SG-770 is approved with IEC 61000-4-5 and IEC 61000-4-12 standards. Each of channels supports 0V ~ ±30V signal and each of channels is protected for surge achieves 6kV.